4.2 magnitude earthquake 4 km from Piedmont, California, United States

2007-07-20 11:42:22 UTC

UTC time: Friday, July 20, 2007 11:42 AM
Your time: 2007-07-20T11:42:22Z
Magnitude Type: mwr
USGS page: M 4.2 - San Francisco Bay area, California
USGS status: Reviewed by a seismologist
Reports from the public: 12709 people